Back massager



FIG. 1 is a front elevational view of a back massager showing our new design;

FIG. 2 is a left side elevational view of the back massager;

FIG. 3 is a right side elevational view of the back massager;

FIG. 4 is a top plan view of the back massager;

FIG. 5 is a bottom plan view of the back massager;

FIG. 6 is a rear elevational view of the back massager; and

FIG. 7 is a cross-sectional view taken along line 7--7 of FIG. 6. 

The ornamental design for a back massager, as shown. 